Paper tacking machine



Nov. 6, 1951 sTElNBERG 2,574,421

PAPER TACKING MACHINE Filed Feb. 16, 1948 INVENTOR.

QWW

' the tacking elements.

Patented Nov. 6, 1951 Unrrsp' STATES PATENT OFFICE 2 Claims.

The present invention relates to a paper tacking machine, wherein thepapers that are to be clipped or tacked together are passed between twowheels provided with wedge-shaped teeth or Wheels having lettersthereon, thus tacking or crimping paper goods or sheets together by highpressure.

The essential feature of the present invention or improvement ashereinafter described lies in the resilient mounting of one of thetacking elements.

The drawings show a front view (Figure 1) and a section through themachine (Figure 2) and a top view (Figure 3) as well as two views oflong and half fiatsprings (Figures 4 and 5).

This machine is efiicient because it has no friction at all and providesthe utmost elasticity of In addition to these two advantages the machinemay be adjustable to provide whatever pressure may be desired. I havefound by experiments in course of years that the present improvementenables the greatest number of paper sheets to be securely tackedtogether by increasing the elasticity of one of the tacking elements byemploying additional springs as an adjustment. The latter permits atemporary as well as a permanent crimping together.

The tacking or crimping machine essentially consists of a body I to beclamped on a table IS with the clamping screw 3. The bottom tacking orcrimping wheel 2a is mounted on a fixed stationary spindle 4a and isrotated by means of a crank handle ll. Both spindles 4a and 4b areparallel.

The mounting of the top fastening element 21) consists of several longfiat springs 5 and additional short springs l4 being slotted and flatwhich bear against the flat faces provided on the spindle db of said topelement, the said springs being slotted at the middle to clear the topfastening element. Upon these flat long or between these long flatsprings are mounted short ones at each side M. On top of the fiatsprings are over mounted two springs (spiral springs), in addition tothe fiat springs 6 at each side or end. The springs are fixed altogetherby the screw la and the adjustment knob lb. The adjustment knobregulates the pressure necessary to efiect a permanent or a preliminarycrimping of paperstuff together as desired. Figure 4 shows one of thelong fiat springs, Figure 5 a short one to be mounted between or on topof the flat springs.

To prevent sliding of the spindle 4b while the crank handle is beingturned, I have provided in this machine a pin on each side 8 slottedinto the both sides of the flat springs. The spiral springs of thespindle in connection with the fiat springs increase the elasticity. Inorder that the invention may be better understood, it will now bedescribed with reference to the accompanying drawings as follows:

Figure 1 shows a front elevational view of the machine. In Figure 1there are shown flat springs 5, body I, handle I I, clamping screw 3,

fixing screw 1a, adjustment knob lb, spiral springs 6, upper spindle 4band upper wheel 2b.

The handle is fixed with the bottom spindle which is bearing the bottomwheel and has to be turned clockwise. The upper wheel is engaged withthe bottom wheel under high pressure of the different springs and crimpspaper inserted.

Figure 2 shows a section through the machine. The upper element isengaged with the bottom element and a table slotted is provided to carrythe paper. A shaped channel 15 guides the paper sheets straight on. Thepins 8 on each side fix the fiat springs or so called flexibletransversal beam in their position during operating and prevent movingor sliding of them.

Figure 3 is a top View of the machine, Figure 4 shows one of the fiatsprings slotted in their middle for the upper wheel and slotted at eachside for the fixing pins, Figure 5 shows half flat springs for usebetween the long springs or upon them to increase the pressure inconnection with the spiral springs.

Having now described my several improvements of the machine and in whatmanner the same is to be formed I claim the following:

1. A paper tacking machine comprising a body, a spindle on the body anda crimping wheel on the spindle, a second spindle parallel to thefirstidentified spindle and a second crimping wheel on the secondspindle in circumferential engagement with the first-identified crimpingwheel, and resilient means for positioning and retaining said secondcrimping wheel in contact with the first-identified crimping wheelcomprising posts on the body on opposite sides of the circumference ofsaid second crimping wheel, a plurality of fiat springs having endsloosely engaging the posts and having central apertures therein adaptedto receive said second crimping wheel, said second spindle having aposition against and beneath the lowermost fiat spring, compressionspring means between the ends of the fiat springs and the posts,adjustable means on at least one of the posts adapted to vary thetension of the compression spring engaging said post, and a REFERENCESCITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Number Name Date Parsons Mar. '7, 1922 RossOct. 23, 1928 Von Vago et a1. Jan. 1, 1929 Mason May 22, 1934 FOREIGNPATENTS Country Date Great Britain of 1935 Germany of 1933

